#include <WiFi.h> 
#include <HTTPClient.h> 
#include <DHT.h> 
 
#define DHTPIN 13 
#define DHTTYPE DHT22 
#define LEDPIN 12 
 
DHT dht(DHTPIN, DHTTYPE); 
 
const char* ssid = "Wokwi-GUEST"; 
const char* password = ""; 
 
const char* token = "-f1BDKS6loEVYOm_Qfah3MHnLj1QttTN"; 
const char* server = "https://sgp1.blynk.cloud"; 
 
void setup() { 
  Serial.begin(115200); 
  pinMode(LEDPIN, OUTPUT); 
  digitalWrite(LEDPIN, LOW); 
 
  WiFi.begin(ssid, password); 
  Serial.print("Connecting to WiFi"); 
  while (WiFi.status() != WL_CONNECTED) { 
    delay(500); 
    Serial.print("."); 
  } 
  Serial.println("\nWiFi connected"); 
 
  dht.begin(); 
} 
 
void loop() { 
  if (WiFi.status() != WL_CONNECTED) { 
    Serial.println("WiFi disconnected, reconnecting..."); 
    WiFi.reconnect(); 
    delay(5000); 
    return; 
  } 
 
  // 1. Baca sensor DHT22 
  float suhu = dht.readTemperature(); 
  float kelembapan = dht.readHumidity(); 
 
  if (isnan(suhu) || isnan(kelembapan)) { 
    Serial.println("Sensor Error"); 
    delay(2000); 
    return; 
  } 
 
  // 2. Kirim data suhu dan kelembapan ke Blynk (batch update via GET) 
  HTTPClient http; 
  String urlSend = String(server) + 
"/external/api/batch/update?token=" + token 
                   + "&V0=" + String(suhu, 2) 
                   + "&V1=" + String(kelembapan, 2); 
 
  Serial.print("Sending data URL: "); 
  Serial.println(urlSend); 
 
  http.begin(urlSend); 
  int httpCodeSend = http.GET(); 
  if (httpCodeSend == 200) { 
    Serial.println("Data sensor terkirim"); 
  } else { 
    Serial.print("Gagal kirim data, HTTP code: "); 
    Serial.println(httpCodeSend); 
  } 
  http.end(); 
 
  // 3. Baca status LED (V2) dari Blynk via REST API GET 
  String urlGet = String(server) + "/external/api/get?token=" + token 
+ "&pin=V2"; 
  http.begin(urlGet); 
  int httpCodeGet = http.GET(); 
  if (httpCodeGet == 200) { 
    String payload = http.getString(); 
    payload.trim(); 
Serial.print("Status LED dari Blynk: "); 
Serial.println(payload); 
// 4. Kontrol LED sesuai nilai yang diterima ('1' = nyala, '0' =  mati) 
if (payload == "1") { 
digitalWrite(LEDPIN, HIGH); 
} else { 
digitalWrite(LEDPIN, LOW); 
} 
} else { 
Serial.print("Gagal baca status LED, HTTP code: "); 
Serial.println(httpCodeGet); 
} 
http.end(); 
Serial.print("Suhu: "); 
Serial.println(suhu); 
Serial.print("Kelembapan: "); 
Serial.println(kelembapan); 
delay(5000);  // Update setiap 5 detik 
}